Copyright Infringement notice while using VPN?

[Resolved, thanks!]

Weird, but I just got two copyright notices from my ISP. I always use a paid VPN (Proton). How'd they see me?

I did accidentally open qBitTorrent before connecting to the VPN yesterday, but immediately exited the program before anything loaded. Is that enough time to get two strikes? One was for seeding TNG S03 and the other for TNG S05 lol.

What confuses me is that that happened yesterday, but the email lists the day prior as the time of offense.

So I guess it's time to set up a kill switch or make sure the qBitTorrent wont open without Proton connected. If anyone has a guide for that send a link my way.... thanks.